Colony Drone 2121 is Pollination Technician 9's maternal grandfather also making him great-grandfather of Jill Smith,Johnny Smith,Lola Singles and Chloe Singles. He cannot be resurrected without the use of hacks.
This Sim has no character data and cannot be resurrected in-game. For more information, read this guide.
Sometimes if you have a Sim get abducted and they give birth there is a bug in the game that makes the random alien parent a Colony Drone. Sometimes the Colony Drone parent is Colony Drone 2121.